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Tag Archives: Current sea level rise
I can’t help wondering just why the Fairfax press keeps running the global warming pieces written by Jo Chandler.This effort “Melting moments put ice sheets in a new light” is actaully rather confused and totally lacking in internal logic. It sets out to discuss two different scientific papers about the changing sea levels in the past. This claim however
What the lower level of sea-level rise suggests, they say, is that both the Greenland Ice Sheet and the West Antarctic Ice Sheet collapsed during the protracted warm of the Pleistocene, when the dance of the Earth’s orbit increased the solar radiation that the planet received.
But the revised level indicates that the East Antarctic Ice Sheet, the behemoth slab of ice spread over 11 million square kilometres and an average two kilometres thick, did not melt significantly through that long period of warming.
On Monday, researchers from Spain and Germany revealed findings that Greenland’s ice sheet is much more sensitive to global warming than previously thought, and may already be approaching a critical threshold.
They calculated that if global average temperatures reach 1.6 degrees above pre-industrial levels – and they have already warmed 0.8 degrees – the Arctic ice would likely tip towards irreversible loss.